The interest in laser treatment has increased in medical treatment, as lasers have entered into the treatment of diseases such as treatment of myopia and length, treatment of emphysema and its treatment in surgeries and treatments of the dilapidated tissues of the liver, prostatectomy and elevation to those rays in the treatment of some bacterial infection diseases such as bacteria that cause gum-causing bacteria and bacteria that cause Because wounds are contaminated, as well as inhibiting the bacteria that cause food, water and water contamination, other than laser problems, the absence of side effects, and their cost is cheaper than the cost of antibiotic treatment. technology, this method uses laser. Medical laser applications based on widespread research and development is a very dynamic and increasingly popular field from an ecological as well as an economic point of view. Conferences and personal communication are necessary to identify specific requests and potential unmet needs in this multi- and interdisciplinary discipline. Precise gathering of all information on innovative, new, or renewed techniques is necessary to design medical devices for introduction into clinical applications and finally to become established for routine treatment or diagnosis. Five examples of successfully addressed clinical requests are described to show the long-term endurance in developing light-based innovative clinical concepts and devices. Starting from laboratory medicine, a noninvasive approach to <br /><br /><br /><br />detect signals related to iron deficiency is shown. Based upon photosensitization, fluorescence-guided resection had been discovered, opening the door for photodynamic approaches for the treatment of brain cancer. Thermal laser application in the nasal cavity obtained clinical acceptance by the introduction of new laser wavelengths in clinical consciousness. Varicose veins can be treated by innovative endoluminal treatment methods, thus reducing side effects and saving time. Techniques and developments are presented with potential for diagnosis and treatment to improve the clinical situation for the benefit of the patient.<br /><br /> Medical laser applications based on widespread research and development is a very dynamic and increasingly popular field from an ecological as well as an economic point of view. Conferences and personal communication are necessary to identify specific requests and potential unmet needs in this multi- and interdisciplinary discipline. Precise gathering of all information on innovative, new, or renewed techniques is necessary to design medical devices for introduction into clinical applications and finally to become established for routine treatment or diagnosis. Medical laser application is a broad area armed with advanced technologies to meet challenges in clinical diagnostics and therapy and to address health care issues that impact broad populations. Recent research and emerging developments provide the vision of improving clinical therapeutic procedures or extending the use of lasers to new fields of medicine. Novel biomedical laser applications and new types of lasers<br /><br /><br /><br /><br /><br /> widen the possible spectrum of laser-tissue interactions to improve target-oriented, precise application of laser radiation in clinical<br />practice.<br /><br /> New laser light application techniques as well as innovative medical keyhole techniques are under development or at the translational stage in clinics. Highly sophisticated targeting strategies, including endogenous or applied fluorophores, conjugates of nanoparticles, and antibodies, pave the way for new treatment modalities. Combination therapies such as the synergetic use of photodynamic therapy (PDT) and immune-modulatory agents or antiseptics are new fields for research and clinical studies. Improved understanding of biological reactions triggered by laser radiation interacting with natural absorbing sites, targeting molecules, photosensitizers, or nanoparticles will lead to progress in the creation of minimally invasive clinical laser light applications, or assist in elucidating particular immunological responses of the tissue. Theoretical considerations and modeling of laser light distribution in tissue with subsequent energy transfer and tissue interactions constitute a solid basis for therapy planning in patients, particularly if combined with improved light delivery and monitoring techniques.<br /><br /> “Medical Laser Applications and Laser-Tissue Interactions” is a subconference during the European Conference on Biomedical Optics held biannually in Munich. Presentations from around the world covering all <br /><br /><br /><br /><br />fields of laser applications in medicine are regularly presented. This conference provides an interdisciplinary forum for scientists, engineers, technicians, and medical doctors using laser-assisted treatment modalities to discuss progress in all these topics. This forum supports presentations ranging from in vitro investigations to clinical studies of new laser light irradiation modalities in the range of 10−3 to 1018 Wcm−2, which can eventually lead to the development of new laser-assisted techniques that can play an important role in the future.<br /><br /> Laser light applications in medicine are based on effects ranging from thermal to nonthermal laser-tissue interactions, which includes ionization effects either on the macro-scale (e.g., in the case of soft tissue smoothing without ablation), on the micro-scale (e.g., in the case of selective retina therapy), or on the nano-scale (e.g., in the case of surgery within cells), as well as short-pulsed laser applications. Generally, both soft and hard tissues can be treated. There are a variety of medical societies, e.g., ophthalmology, dermatology, and urology, where laser-assisted applications are already part of routine diagnostics and therapy. Here, advancing laser medical applications are summarized, which are close to entering into clinical practice, e.g., noninvasive detection of iron deficiency, improvements in the treatment of glioblastoma multiforme (GBM), photonic technologies for breast cancer (BC) management ranging from risk assessment to therapy, minimally invasive endonasal surgery, and endoluminal laser treatment of varicose veins. It is intended to describe<br /><br /><br /><br /><br /><br /><br /> the way how unsolved or insufficiently solved problems in clinical medicine can be overcome step-by-step by suitable technical solutions, which requires identifying the white spots as well as bridging the gap between the research bench and bedside.<br /><br /> Medical laser application is a broad area armed with advanced technologies to meet challenges in clinical diagnostics and therapy and to address health care issues that impact broad populations. Recent research and emerging developments provide the vision of improving clinical therapeutic procedures or extending the use of lasers to new fields of medicine. Novel biomedical laser applications and new types of lasers widen the possible spectrum of laser-tissue interactions to improve target-oriented, precise application of laser radiation in clinical practice. New laser light application techniques as well as innovative medical keyhole techniques are under development or at the translational stage in clinics. Highly sophisticated targeting strategies, including endogenous or applied fluorophores, conjugates of nanoparticles, and antibodies, pave the way for new treatment modalities. Combination therapies such as the synergetic use of photodynamic therapy (PDT) and immune-modulatory agents or antiseptics are new fields for research and clinical studies. Improved understanding of biological reactions triggered by laser radiation interacting with natural absorbing sites, targeting molecules, photosensitizers, or nanoparticles will lead to progress in the creation of <br /><br /><br /><br /><br /><br /><br />minimally invasive clinical laser light applications, or assist in elucidating particular immunological responses of the tissue. Theoretical considerations and modeling of laser light distribution in tissue with subsequent energy transfer and tissue interactions constitute a solid.<br /><br />The acronym LASER, constructed from Light Amplification by Stimulated Emission of Radiation, has become so common and popular in every day life that it is now referred to as laser. Fundamental theories of lasers, their historical development from milliwatts to petawatts in terms of power, operation principles, beam char- acteristics, and applications of laser have been the subject of several books . Laser has been used in many medical fields since its invention in the year 1960. The technological machine use in modern medicine has developed amazingly One of the most popular applications of this technology It is the entry of lasers into the field of surgery, cosmetology, ophthalmology and disease treatment Skin and other diseases which added to the treatment methods more magic And ingenuity thanks to these amazing rays and the latest great scientific revolution, unprecedented in The field of curative medicine and surgery. The first theoretical foundation of LASER was given by Einstein in 1917 using Plank’s law of radiation as based on probability coefficients (Einstein coefficients) for absorption and spontaneous and stimulated emission of electromagnetic radiation.<br />